Product Overview

CNC-cut steel structural connectors are fabricated parts used to join primary and secondary steelwork or to form defined interfaces at foundations. Typical items include base plates, gusset plates, fin plates, L-type brackets, U-type connectors and built-up welded assemblies. JND supplies these parts in Q355B, Q235B and ASTM A572 Grade 50 options listed below, with geometry based on confirmed project drawings.

Connection parts have a direct role in how a steel frame is erected, but their capacity is not determined by plate thickness alone. Bolt groups, weld configuration, stiffeners, member forces, anchor layout, foundation design and installation procedure must work together. CNC-cut steel structural connectors should therefore be selected and detailed by the responsible project engineer, then released for fabrication through approved drawings.

Key Features

CNC-Cut Geometry

CNC laser cutting and high-definition plasma cutting can produce defined plate outlines, holes, slots and edge preparation. This supports repeatable fabrication from the approved drawing set. The listed ±0.5mm tolerance relates to high-strength bolt group alignment; the applicable tolerance for each part should be stated in the project documentation.

Welded and Reinforced Assemblies

Where an assembly requires it, stiffeners and ribs can be incorporated to support the intended load path. Submerged arc welding is listed as a processing option. Welding procedure, weld size, inspection scope and acceptance requirements must follow the approved connection design and contract documents.

Surface Protection Options

Hot-dip galvanizing to ISO 1461 and Z275 coating are listed surface options. The chosen protection system should relate to the actual service environment, surface preparation requirements, handling plan and specified inspection records.

Technical Advantages

Factory-cut connectors can help coordinate structural interfaces before steel reaches the site. A confirmed hole pattern can be matched to a bolted connection, while a documented base-plate geometry can be checked against anchor-bolt templates and foundation drawings. This does not remove the need for site survey, erection control or bolt installation checks, but it gives teams a clearer basis for preparation.

For complex steelwork, CNC-cut steel structural connectors can combine cutting, drilling, bevel preparation and welded reinforcement in one fabrication scope. That can simplify procurement when the project has a defined drawing release. It is important to distinguish fabrication accuracy from whole-frame tolerance: field conditions, anchor positions, member alignment and erection sequence still require verification by the responsible site team.

Technical Specifications

The table retains the supplied specifications. Final thickness, process, coating, quantity and delivery schedule should be confirmed in the technical review and quotation.

Materials and Installation

Steel grade and plate thickness should follow the released connection calculations and drawings. Q355B may be selected where the approved material schedule requires it, while Q235B or ASTM A572 Grade 50 may be specified for other project scopes. Material traceability and inspection documents should be requested according to the agreed order requirements.

At site, base plates and related connectors are normally coordinated with foundation levels, anchor templates, bolt groups and erection sequencing. A typical bolted connection requires the parts to be aligned, the specified fasteners installed and tightening completed according to the project procedure. No connector should be treated as a universal component: anchor design, bolt grade, torque requirements and weld scope are project specific.

Applications and Commercial Value

Frequently Asked Questions